diff --git a/api/app/lib/controllers/means/index.js b/api/app/lib/controllers/means/index.js
index 878de2c..ec83b08 100644
--- a/api/app/lib/controllers/means/index.js
+++ b/api/app/lib/controllers/means/index.js
@@ -1,6 +1,7 @@
 'use strict';
 
 async function addEditFile (ctx, next) {
+   let message = '添加文件夹失败'
    try {
       const models = ctx.fs.dc.models;
       const data = ctx.request.body;
@@ -14,7 +15,8 @@ async function addEditFile (ctx, next) {
          }
       })
       if (onefind) {
-         throw '文件夹名称重复'
+         message = '已有同层级文件夹'
+         throw message
       }
 
 
@@ -33,7 +35,7 @@ async function addEditFile (ctx, next) {
       ctx.fs.logger.error(`path: ${ctx.path}, error: ${error}`)
       ctx.status = 400;
       ctx.body = {
-         "message": '添加文件夹失败'
+         "message": message
       }
    }
 }
diff --git a/web/Dockerfile b/web/Dockerfile
index 0ef1cde..2cc0abe 100644
--- a/web/Dockerfile
+++ b/web/Dockerfile
@@ -9,6 +9,7 @@ EXPOSE 8080
 RUN npm config set registry=http://10.8.30.22:7000
 RUN echo "{\"time\":\"$BUILD_TIMESTAMP\",\"build\": \"$BUILD_NUMBER\",\"revision\": \"$SVN_REVISION_1\",\"URL\":\"$SVN_URL_1\"}" > version.json
 RUN npm cache clean -f
+RUN rm -rf package-lock.json
 RUN npm install --registry http://10.8.30.22:7000
 RUN npm run build
 RUN rm  -rf client/src
diff --git a/web/client/src/sections/means/components/fileModal.jsx b/web/client/src/sections/means/components/fileModal.jsx
index 7f72f78..a94300f 100644
--- a/web/client/src/sections/means/components/fileModal.jsx
+++ b/web/client/src/sections/means/components/fileModal.jsx
@@ -50,7 +50,7 @@ function FileModal (props) {
                   <Form.Input
                      field='fileName'
                      label='文件夹名称'
-                     rules={[{ required: true, message: "请输入文件夹名称" }]}
+                     rules={[{ required: true, message: "请输入文件夹名称,最多20个字", max: 20 }]}
                      initValue={editData?.fileName}
                   />
 
diff --git a/web/client/src/sections/means/containers/projectMeans.jsx b/web/client/src/sections/means/containers/projectMeans.jsx
index fce98a9..59f0927 100644
--- a/web/client/src/sections/means/containers/projectMeans.jsx
+++ b/web/client/src/sections/means/containers/projectMeans.jsx
@@ -196,11 +196,6 @@ const Rest = (props) => {
                <Button theme='borderless' type='primary' style={{ marginRight: 8 }} ><a href={`/_file-server/${r.url + '?filename=' + encodeURIComponent(r.name)}`}>
                   下载
                </a></Button>
-               <Button theme='borderless' type='primary' style={{ marginRight: 8 }} onClick={() => {
-                  preview(r.url)
-               }}>
-                  预览
-               </Button>
                <Popconfirm
                   title="是否确认删除文件？"
                   // content="此修改将不可逆"
@@ -215,6 +210,16 @@ const Rest = (props) => {
                >
                   <Button theme='borderless' type='danger' >删除</Button>
                </Popconfirm>
+               {(r.url?.indexOf("txt") !== -1 || r.url?.indexOf("rar") !== -1 || r.url?.indexOf("zip") !== -1) ? ""
+                  : <Button theme='borderless' type='primary' style={{ marginRight: 8 }} onClick={() => {
+                     preview(r.url)
+                  }}>
+                     预览
+                  </Button>
+
+               }
+
+
 
             </div>
          }